The flashback also reveals that Yoriichi had a twin brother named Michikatsu Tsugikuni, who became a
Kokushibo (黑死牟) is the secondary antagonist of the manga/anime series Demon Slayer: Kimetsu no Yaiba. He is Upper Rank One of the Twelve Kizuki, and the archenemy of his younger twin brother, Yoriichi Tsugikuni.
Nearly five centuries ago during the Sengoku Era, Kokushibo was once a human by the name of Michikatsu Tsugikuni ( 継 つぎ 国 くに 巌 みち 勝 かつ , Tsugikuni Michikatsu?), a former Demon Slayer and the older twin brother of Yoriichi Tsugikuni, the strongest Demon Slayer that had ever existed.
Yoriichi's elder twin brother, Michikatsu, was the successor of their family. Initially, he pitied Yoriichi because he was discriminated against due to his Demon Slayer mark on his forehead.
Is Upper Moon 1 related to Tanjiro? No, they are not related. Tanjiro, by PURE COINCIDENCE, heavily resembles Yoriichi Tsugikuni, the creator of Breath swordsmanship, the only other person to use Sun Breathing, and the only person Muzan ever feared.
As the battle reached its climax, Tanjiro was able to knock the doll's head off and discovered that the mechanical body contained a mysterious sword. Fans of the manga will recognize this sword as the one carried by Yoriichi Tsugikuni himself.
no. Yoriichi is not Tanjiro's dad, that would be Tanjuro. And Yoriichi is not related to the Kamado clan at all.
Rimuru Tempest becomes a God towards the end of the series and can travel back in time and travel between worlds. His space-time abilities alone would be enough to beat Yoriichi. This character is often stated to be stronger than Goku, despite the community being quite divided on this topic.
Only two Slayers were ever known to be older than 25 with a Mark. Yoriichi lived till old age, likely due to him having been born with the mark and thereby avoiding the curse altogether. Gyomei on the other hand did not activate his Mark until he was already older than 25.
But if we are talking about the human form, then it's a big fat NO, because Tanjiro has just mastered the Sun Breathing whereas Yoriichi is the inventor of it, also he's way more powerful and holds an unfathomable battle intellect, larger than any Demon Slayer in history, so in conclusion, no one is remotely close to ...
Seeing that he still thought highly of him even after his transformation, Kokushibo couldn't help but shed a tear. Unable to truly sever his bond with his brother, he decided to keep the flute.
Yoriichi defeated Muzan in an instant, but he had a question for him before eliminating him, which allowed Muzan to escape.
Akaza was also one of Muzan's favorite demons out of all his subordinates. The reason behind this is Akaza's extreme loyalty to his master. The Upper Rank Three demon was always sent away on special missions, something the Upper Rank 1 and 2 were often denied of.
As the young slayer aids in picking off more and more of the Twelve Kizuki, Muzan finds just as many reasons to be scared of Tanjiro Kamado. Tanjiro also ends up being the one to land the final blow on Muzan's original body, further proving why Muzan is scared of Tanjiro throughout the series.
After the deaths of Daki and Gyutaro, Kaigaku was promoted to become Upper Moon Six of the Twelve Demon Moons due to his power and confronted Zenitsu as a rematch he always desired.
He is a demon affiliated with the Twelve Kizuki, holding the position of Upper Rank Six ( 上 じょう 弦 げん の 陸 ろく , Jōgen no Roku?), replacing Daki and Gyutaro after their deaths.
In the Demon Slayer manga's final chapter, Yoriichi and his family have been reincarnated and are seen in the deep background of a panel as Tanjiro's own descendants head to school.
When Yoriichi moved forward to kill him, Muzan used the remains of whatever power he had left and divided his body in a powerful burst. Though Yoriichi was able to destroy nearly all the fragments, the pieces he missed escaped and allowed Muzan to regenerate again.
Yoriichi would be able to defeat every single Hashira on this list without breaking a sweat. Such was his reputation and skill in swordsmanship.
Ainz's spells are so deadly that they can make Muzan's demon blood boil with fear. He's taken down some of the most powerful foes with ease, including Shalltear and Jaldabaoth, who are themselves stronger than Muzan Kibutsuji. Muzan may be the king of demons, but he's no match for Ainz's spell-slinging skills.
Yoriichi Tsugikuni, the first swordsmen to ever use Breathing Styles, once nearly killed Muzan with Sun-Breathing, and Muzan has been both physically and psychologically scarred ever since.
2) Tanjiro Kamado
With his awakened Demon Slayer Mark along with his Transparent World, he could match up with Kokushibo's speed. Moreover, Tanjiro's Sun Breathing is too lethal for Kokushibo and with his swordsmanship he can rival the latter.
Tanjiro Kamado is the only (known) living user of the Hinokami Kagura, but unlike the Water-Breathing he learned from former Hashira Sakonji Urokodaki, Tanjiro learned Sun-Breathing from his and Nezuko's late father, Tanjuro Kamado. So the question now is: who was Tanjuro Kamado?
Tanjuro Kamado was the name of Tanjiro Kamado's father. He passed away before the event of the main story of the Demon Slayer. It is not mentioned how long Tanjuro had passed before the story, but in several flashback scenes, we can see him interacting with a younger Tanjiro.
Tanjiro's ancestor was a good friend of Yoriichi and arguably was one of his only true friends. Therefore Yoriichi gave the earrings as a gift, and since then they have been passed down the generations until they reached Tanjiro.